UM1550S-33

{
  "schema_version": 1,
  "type": "component",
  "slug": "um1550s-33",
  "title": "UM1550S-33",
  "brief": "Union Semiconductor Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "um1550s-33",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UM1550S-33",
    "manufacturer": "Union Semiconductor",
    "package": "SOT23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/um1550s-33-d.pdf",
    "parts": {
      "symbol": "um1550s-33.kicad_sym",
      "footprint": "um1550s-33.kicad_mod",
      "model_3d": "um1550s-33-hero.glb",
      "model_3d_plain": "um1550s-33-etched.glb",
      "model_3d_step": "um1550s-33-etched.step",
      "model_3d_step_plain": "um1550s-33.step",
      "lbr": "um1550s-33.lbr"
    },
    "distributor_links": {
      "lcsc": "C7542872",
      "digikey": "3351-UM1550S-33TR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T05:37:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "3351-UM1550S-33TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the regulator."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage, 3.3V fixed for the -33 option, with 300mA guaranteed output current and a 350-550mA current limit."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input accepting 1.8V to 8V (absolute maximum -0.3V to +10V)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 24,
        "cost_usd": 0.1006,
        "at": "2026-10-27T05:37:22"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/um1550s-33-d.pdf",
        "pages": 24,
        "sha256": "dbe4313ebf61b9cd",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "um1550s-33.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "um1550s-33-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0e922e04d17986d4973724a82814b25182f49918664a3e9ecd1090b2fd07f599",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Union Semiconductor",
      "Package": "SOT23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "um1550s-33"
  ],
  "discovery_pitch": "UM1550S-33 (Union Semiconductor) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "um1550s-33.kicad_sym",
    "um1550s-33.kicad_mod",
    "um1550s-33.glb",
    "um1550s-33.step",
    "um1550s-33.lbr",
    "docs/hero.png",
    "docs/um1550s-33-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "um1550s-33-hero.glb",
    "um1550s-33-hero.overlay.json",
    "um1550s-33-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}